d alton



w. DALTON. MANUFACTURE OF BLENDED POWDER COMPOUNDS.

Patented Nov. 7, 1916.

2 SHEETS-SHEET I.

APPLICATION FILED JULY I8, 1916.

Jar

m I 19a, 77A. I I] 2,

WITNESSES:

. A9 l/VVEN TOR 21 W 021/ W 22 i W. DALTON.

MANUFACTURE OF BLENDED POWDER COMPOUNDS.

APPLICATION FILED JULY I8. 1915. 1 ,204, 1 37. Patented Nov. 7, 1916.

" 2 SHEETSSHEET 2 INVENTOR WITNESSES.-

mu NOKR'; A'Enus 1:0. 11010 um wA-iulnurau, u. c

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pgwgierzv inexplosive projectiles, a d b jectis' to provide a. method or process S l eneeta ye n the.-. ;Q nty= i n t dy Blended Bowder Com- Q be yiriliijelr in uprominent the follownst-i asfsp e ficat on-z of -c Powde d ing d t mo p r c l r y s e ofgtr t entpf the ingredienta' and amechmen,- where y plum ity e y a d Uniiionnglayerspof, finely divided. powder pert les may? braep i ed, as ey e s t-- -fimmrr epta esinelosins. pr por o e qlimfiti iii the; pgwder, in such manner as e; bl ince hi h de r o P f i an hq eu nseiin =ble 1 i ,-.--by 5 api ml;

a simple method; to prevent the escape of ust -Mhe p o essma u a re; a t ua dan t -th -eop m he mbi. ed-ingredients form an explosive I Heretfore, it has been the; practice to pro.-

h t entre-11nd,

he im t 11 it sm; Partly m; e t t n and p r y oft-t the tl'rq e ew -lmr in ent n-s; g:- 2, Plait-YEW- tt reefi Fia similar Wiew, wi h. he w temo I a d v v a po i o'sheivremew ry s l f rm men $he-dtwharga ut1et; i h ma hi i ek nlawazy Fig, ,4, ,an enlarged sectional detail View of hemlere xy Sea d e he ge it1 t;F Yawie'w, elevation, and on a smaller 5 7 seal ofla dust collector :andexhallst fan;

eme e yew, i e v i a pawd hi rm can: a Sifter d ptacle formed thereon; Fig. 7 a planyiew hen oi, -Pfi y-; j l9n; a d,t i .a pa ial erticalisection} .onxth'e linea. a.- of

m 2" ,1 f 1'; =1 the practice of my nvent on, refermanuiacture'of powder compounds which can, be mechanically acted on with safety,

when taking the, usual, precautions em-v ployedfin the manufacture of ordinary explosive cornpounds, aplurality of the requijlifacruni'i orfiimlinnnjrownrm ooiuiibju'i'qfisj n I 'Spe'cificat ion of Letters Patent} f V at ncationrieaiu 1-8,'191,6.fSeria1No. 109,8881w myention relates the manufacture emp un s, .e mpr s g a plurali y of:

dent .aad1stastier:

v I y built metallic shield,iormedaroundae-meth M9 antisee nss Figur 2 e r-y pow ered aiiigre i ntsiis selected .6- PWP "P OPQB i I Z to foIfIIi the; desired l nd-0t cemp lmdwk f z lie several p oportions of: ingredients are placed; in; separate recepatacles, from eaoh of" which, :they are slfte. t a co mon: moyable supporting surface; at; ,-a tes.,- 0f1.= .delivery eor spondin to e p ed m Propor i ns; orfth 'sev-. eral ingredients required-to .form the. blend.v o gcompound desired. Bythe movement of the supporting surface, the, particles-of the, several proportions' of ingredient's are .=causedito -{bei;deposited thereon in, thinintimately commizn-gled layers, which are broken up. and; discharged, ,and the} resulting: proper-ly proportioned mixture is thereafter :repeai edly relayered, as-to: obtainhthe; practi- Cally eomplete 23nd intimate comminglingt of ith ej particlesqof the "set 617 1 ingredients tect; the-operatorrby means 4 ofa substantially ch'fanicallyor hand; Qperated-mi-xen- To further guard against danger,- the moyingparts hemixe1?, fl' ldrthe reeep ecle wallswh ame in c test wi hrthe c pound, were covered by a; protecting? shield? of suitable materia1s, adapted; to vavoid,undue v percussion andfriction. Compounds; of the chart r r er o,- =are,.,-wh n. dry, so .ex- 7 tremelyj sensitive/lets tobe, liable to explode when slid down aninelined surfacei" In order to completely guard against dan-' ger,'- a nd to avoid the slightest mechanical mix-inggofa; sensitive-explosive compound, 1 inthe practice ofthe process of my invention, each of; the several proportions of .dry powdered ingredients is,- asbefore described, placed .4 in: .a .separate receptacle, and while the proportions of: ingredients are being sifted from the; receptacles. to a common movable supportingsurface, they are, before being combinedintoan explosive compound,psprayed with a liquid, as wateryor alcohol, for the, purpose of thoroughly saturating them with liquid and forming a non-explosive plastic mixture, which can be safely: molded into any desired form. I a

from the can byadmitting Fair tov the vi-.

: brator, 25, throughthehose, 25.,frlom any v movable powder supportingwsurface. formed by the conical hopper bottom, 4%,-'so=:a's to' completely. spray, all the; surfaces forming the interior walls'of thehopper while it is being rotated, and to thoroughly wet the ingredients while they: areibeing sifted and deposited in layers uponthe movable supportin surface. The stop valve, 31*, is provided oistarting and" stopping the sprays, I

which are operated only when blending" highly sensitive explosive compounds, during which operation the supplementary blending apparatus, 19, is removed.

In the operation of the machine on powders which can be mechanically mixed with.

safety, when taking the usual precautions followed when blending ordinary explosive powders, carefully determined proportions of the different powders intended to form the blend desired, are supplied from powder cans into any desired number of the receptacles, 11, by means. of the can clamp, 26, and the vibrator, 25, which is provided with a sufficient length of air hose, 25?, to permit it to be placed over any one of the receptacles. After filling all, or any desired number, of the receptacles with a properly proportioned amount of powder, calculated to give the desired blend, the scraper, 22, is lifted to its uppermost position, the hopper isrotated, and the vibrators, 13, are started simultaneously as nearly as possible, and each is adjusted to sift at the desired rate, for the purpose of depositing a great number of uniformly thin layers of powder upon the conical hopper bottom. When the receptacles are emptied, the vibrators, 13, are stopped, and the vibrator, 19*, on the supplementary blender, 19, is started. By lowering the scraper, 22, continued rotation of the hopper will cause the layered powder, the upper surface of which is indicated by the reference symbol, 30, in Fig. l, to be thoroughly broken up and mixed before lifting the valve, 6, to permit its downward flow into the bag, 18, from which it is fed into the supplementary blender, 19, in which the properly proportioned mixture is repeatedly relayered. From this blender it passes down into the can, 20, and is weighed by the scale, 20".

When operating the machine on highly sensitive explosive compounds, as, for example, percussion compounds, the method, above described, of filling the receptacles, l1, and sifting their contents into the hopper, is followed. In addition thereto, the stop valve, 31, of the liquid supply pipe, is

opened, so as to simultaneously and thorthe r outlet, 49?, after--:opening-'=the' ivalye,z6, .Zthe% supplementary blender,

viously ire'moved; a

claimras my invention and;desireito' i secure by Letter's l atent 5;

1. The process of manufacture dedi powder-f compounds which consistsinis'eparately sifting a plurality of properly pro portioned' dry powdered ingredients apes a' 'moving supporting surface, so as to deposit the powdered particles of the in redients thereon, in successive pluralities 0 thin and intimately mixed layers of each of the several ingredients; thereafter breaking up the multiple layered deposit; and finally repeatedly relayering said deposit, so as to thoroughly blend the entire. mixture,

2. The process of manufacture of blended powder compounds which consists in separately sifting and depositing a plurality of dry powdered ingredients upon a moving surface, and simultaneously spraying the ingredients with a liquid as they are being layered upon the moving surface, for the purpose of intimately and safely combining the ingredients without dangerous mechanical manipulation, and thoroughly saturating them with liquid, thereby forming a non-- explosive mixture which can be safely molded into any desired form.

3. The combination, .in a powder blending machine, of a frame; a rotary hopper supported thereon, and having a discharge outlet; a hopper cover; means for sifting owder into the hopper; and a liquid seal ormed between the cover and the hopper to prevent undesired escape of powder therefrom. v 4. The combination, in a powder blending machine, of a frame; a rotary hopper supported thereon, and having a discharge outlet; a hopper cover; means for sifting powder into the hopper; a stationary member formed around the discharge outlet; and a liquid seal formed on said member and around the outlet to prevent undesired escape of powder from said outlet.

- 5. The combination, in a powder blending machine, of a frame; a rotary hopper supported thereon, and having a discharge outlet; a hopper cover; means for sifting powder into the hopper; an annular trough formed around the hopper and adapted to contain a sealing liquid; and a downwardly projecting circular flange fastened to the cover and extending into the trough for the purpose of forming a seal with the liquid therein.

6. The combination, in a powder blending 1g rgzo emsr bfi-ai-fmme; fwnroteiry happen Si1p- IDifl/Chizlil'fiy ofa fmmeya. rotary hopper sup-'5' pnizted therfeomnajpd-haying ardisoha rge out? pprtedlbhereome millti ported-hopper covemi 15 leirg rra, hoQper cover ymeansefon sifiingpow powder sifting reeeptaelesdisposed above; der -iinfiog -the;fhoppergzaga gianmflar trough the; ports-0f the coyerge powder shippifig 5: famedarolindwthezhoppnand adapted-to oan ya'nd a.portab1e-vib;iating means adapted cmmini'a liquidzgvaldowmwardly pro? to v be attached thereto 01 .the-,pu1p0senof-' jedfiil i'g,eifienlafiflengedasteried to the; cover emptying the-caninto one of. said 20 ankgeabendingilito'the-troligh forthe pu;r*- receptacles. I i poseof formmg a seal with liquidwtherein; e

m" and a: ehield -d isposeci adjacent bathe-trough for preventing powdenfrdm being splashed Witnesses: theteiiitbitw a :Jms-wJBamokDa eombinationg in a powdenblending 1 RLGHA NDIER; 

